Which is an observation?
Data and information you gather usually by using your senses or a tool
Conclusions based on evidence
Data and information you gather usually by using your senses or a tool is an observation.
Counting the number of barnacles on a boat would be what type of data?
Quantitative
Qualitative
Counting the number of barnacles on a boat would be considered quantitative data, as it involves a numerical measurement.
Describing the types of barnacles would be what kind of data?
Qualitative
Quantitative
Describing the types of barnacles would be considered qualitative data, as it involves subjective characteristics or qualities rather than numerical measurements.
What type of data is identifying where the barnacle is found on the boat? (Quantitative or qualitative). Why?
Identifying where the barnacle is found on the boat would be considered qualitative data. This is because it involves describing the location, which is a subjective characteristic rather than a numerical measurement.
Is the statement "barnacles are found on the bottom of the boat" an observation or inference?
Inference
Observation
The statement "barnacles are found on the bottom of the boat" is an observation. It is a direct statement of fact that can be observed and verified.
Is the statement "barnacles are found on the bottom of boats because they don't like the cold air on top of the boat" an observation or inference?
Inference
Observation
The statement "barnacles are found on the bottom of boats because they don't like the cold air on top of the boat" is an inference. It goes beyond direct observation and introduces a possible explanation or interpretation for why barnacles are found in a certain location.
How is the control group treated differently from the experimental groups?
In an experiment, the control group is treated differently from the experimental groups in that it is not exposed to the independent variable being tested. The purpose of the control group is to serve as a baseline for comparison. The experimental groups receive the treatment or manipulation of the independent variable, while the control group does not. This allows researchers to compare the outcomes or effects of the treatment with the baseline condition.
What is the experimental group?
The group that represents the normal conditions
The group that gets the special treatment
The experimental group is the group that receives the special treatment or manipulation of the independent variable in an experiment. This group is exposed to the specific condition or intervention being tested to observe the effects or outcomes of the treatment. It is compared to the control group, which represents the normal or baseline conditions, in order to determine the impact of the independent variable.
Why is a control group important?
It changes all the time, allowing us to see if the experimental group stays the same
It is used to see if the experimental group causes a change.
A control group is important in an experiment because it serves as a baseline for comparison. Its purpose is to provide a reference point to assess the effects of the independent variable being tested. By keeping the control group unchanged and not exposing it to the treatment or manipulation, any observed changes or outcomes in the experimental group can be attributed to the specific intervention rather than other factors. This helps researchers determine if the treatment or manipulation caused a change and allows them to draw reliable conclusions about the impact of the independent variable.
Why is a control group important? select the correct answer
It changes all the time, allowing us to see if the experimental group stays the same
It is used to see if the experimental group causes a change.
The correct answer is: It is used to see if the experimental group causes a change.
The control group is essential in experiments to serve as a baseline for comparison. By not exposing the control group to the treatment or manipulation, any observed changes or effects in the experimental group can be attributed to the specific intervention being tested. This allows researchers to determine if the experimental group's outcomes or changes are a result of the treatment or if they are due to other factors.
You are a scientist and would like to know if a new fertilizer will help plants grow faster. What would the experimental group be? select the correct answer
The plants that get different amounts of the new fertilizer
The plants that only get water
The plants that only get soil
The correct answer is: The plants that get different amounts of the new fertilizer.
In this scenario, the experimental group would consist of the plants that receive different amounts of the new fertilizer being tested. This allows the scientist to examine and compare the growth of these plants with the control group (which could be the plants that receive no fertilizer or receive a standard fertilizer) to determine if the new fertilizer has any effect on the growth rate of the plants.
You are a scientist and would like to know if a new fertilizer will help plants grow faster. What would the control group be? select the correct answer
The group that gets water and fertilizer
The group that gets only water, no fertilizer
The correct answer is: The group that gets only water, no fertilizer.
In this scenario, the control group would consist of the plants that receive only water, with no fertilizer added. The purpose of the control group is to provide a baseline for comparison and to determine the natural growth rate of the plants without any external influences from the fertilizer. By comparing the growth of the experimental group (plants that receive the new fertilizer) with the control group, the scientist can assess the impact and effectiveness of the new fertilizer on plant growth.
How many independent variables should there be in an experiment
In an experiment, there can be one or more independent variables. The number of independent variables depends on the research question or hypothesis being investigated and the complexity of the experiment. While it is common to have one independent variable in a simple experiment, more complex experiments may involve multiple independent variables to explore their separate or combined effects on the dependent variable(s).
What are constants in an experiment?
In an experiment, constants are the factors or variables that are kept consistent and unchanged throughout the entire study. They are used to ensure that only the independent variable(s) under investigation has an effect on the dependent variable(s). By controlling or maintaining these constants, researchers aim to eliminate potential confounding factors and accurately assess the impact of the independent variable(s) on the outcome(s) of interest.
For example, if studying the effect of different temperatures on plant growth, a constant could be maintaining the same type and amount of soil, providing the same amount of water and sunlight, and keeping the same species of plants. These constants help to isolate the impact of the temperature variable on plant growth.
What variable goes on the x-axis?
The variable that goes on the x-axis is typically the independent variable, also known as the predictor variable or the cause. The x-axis is horizontal and represents the values or levels of the independent variable being manipulated or measured in an experiment or study. It is also where the response or dependent variable, which is influenced by the independent variable, is plotted or observed. By representing the independent variable on the x-axis, it allows for a clear visualization of its relationship with the dependent variable on the y-axis.
In this example:
"A bug repellant is sprayed on one arm the other arm is not sprayed. The number of bug bites is recorded after 2 hours."
What is the dependent variable?
Bug spray/no bug spray
Number of bug bites
2 hours
In the given example, the dependent variable is the number of bug bites. It is the outcome or response variable being measured or observed in response to the manipulation of the independent variable, which is whether bug repellent is sprayed on the arm or not. The number of bug bites serves as the indicator of the effectiveness of the bug repellent in preventing bug bites. The time period of 2 hours is not the dependent variable in this scenario since it does not directly depend on the manipulation of the bug spray.
In this experiment:
"One chicken is injected with a growth hormone while another chicken is not injected. Both chickens are weighed after a year."
What is the independent variable?
Growth hormone
Weight of chickens